Lock and latch.



f No. 868,782. PATENTED 00T. 22, 1907.

J. HILTPOLD.

LOCK AND LATCH. APPLIUATION FILED MAY a. 190s.

JOHN HILTPOLD, OF NEW BRITAIN, CONNECTICUT.

LOCK AND LATCH.

Specification of Letters Patent. Application led MHV 8, 1906. Serial No.315,788.

Patented oct. 22, i907.

To all 'whom 'it may concem:

Be it known that I, JOHN Hnnronn, a citizen of the United States, and aresident of New Britain, in the county of Hartford and State ofConnecticut, have invented a new and Improved Lock and Latch, of whichthe following is a specification.

Mypinvention relates more especially tothat class of locks and latchesin which the bolt is manually operated as by means of a spindleconnected witha knob or by other means, and the object of my inventionamong others is to provide a lock of this class of comparatively fewparts, simple in construction, and with the parts so yformed as toprevent the bolt being surreptitiously thrown; and a further object ofthe invention is to provide such means that while allowing operation ofthe bolt by means of the knob on the outer side ofthe door shall be selfactuating to disconnect said knob from the bolt operating mechanism. Aform of device in the use of which these objects may be attained isillustrated in the accompanying drawings, in which- Figure 1 is a viewin elevation through the case of my improved lock showing the parts withthe bolt proj ected from the case. Fig. 2 is a -top or edgeview of thedevice shown in Fig. l and also showing the means of attachment to adoor. Fig. 3 is a detail view showing the means for connecting the outerknob with the operating mechanism. Fig. 4 is a detail view in lengthwisesection through the rosette on the inner face of the door. Fig. 5 is adetail view showing the position of the trip to allow return movement ofthe cam levers. Fig. 6 is a detail view in elevation of the cam levers.

While my invention lcontemplates a lock case in which the parts may beentirely inclosed, the operating spindle, bolts and cams, of course,projecting therefrom, yet a convenient form of construction is shownherein, in which the parts are inclosed within the door partially by thebase plate, and partially by face plates. I have, however, as an aid tothe description termed the parts supporting the operative elements acase, this consisting of a base plate 1 having an end wall 2 and aflange 3. Openings 4 are formed through the end wall, and springsupporting lugs 5 project from the flange 3.-

Cam levers 6 are pivoted to the case in position to project through theopenings 4, as shown in Figs. l and 2 of the drawings. While two camlevers are shown herein, it will be obvious that the employment of asingle cam lever will accomplish the same result, but by employing anumber of cam levers force is applied equally upon opposite sides of thebolt to draw it backward and thus prevent any cramping action. As shownherein, these cam levers are rigidly connected by a cross-bar 7terminating in supporting pins 8. These pins are preferably located in arecess formed between the lugs 5 and the end wall 2, as shown in Fig. 2of the drawings. Springs 8, the ends of which bear against pins 9, holdthe levers normally at the outward limit of their play. Guide lugs 10for the bolt are formed on the base plate 1, and a bolt 11 is mountedbetween these lugs in position to project through a bolt opening 12 inthe end wall 2 of the case. This bolt is of rectangular form incross-section throughout the entire length of that part projectingthrough the end wal1'2 of the case. This bltis provided with the usualbranches 13 having toes 14 against which the roll-back 15 acts, thisrollback being operated in the usual manner by means of a spindle andknob 17 located on the inner face of the f door. A spring 18 located ina recess 19 in the bolt thrusts against a spring stop 20 projectingfromthe base plate 1. A stud 21 may be employed for holding the springagainst lateral movement.

A bolt trip is pivotally mounted upon the bolt, this trip, when seen inend View, being of 'U-shapeand including the side parts 22 joined by theplate 23. Extensions 24 from the side parts provide means for pivotallymounting the trip, the pivot 25 passing through the bolt and into theseextensions 24. Trip cams 26 are formed on the side parts of the trip,the forward edge of these trip cams being formed to engage trip pins 27on the cam levers 6. A trip spring 28 is located between the trip andthe bolt 1I, as shown in dotted lines in Fig. 2 of the drawings.

It will be noted 4that the bolt being of rectangular form incross-section as to the entire part projected from the casing, that itwill be impossible to throw the bolt backward as by means of aninstrument inserted between the edge of the door and the door jamb orstrike plate, for the reason that there is no beveled surface upon whichsuch instrument may act. The

A door being opened, as it is closed and the case thus moved withrespectto the door frame the beveled surfaces 29 on the levers 6 engagng thestrike plate, these levers'are forced backward, carrying the bolt 11also backward by reason of the pins 27 engaging the trip cams 26. As thelevers, swinging upon pivots 8, are moved inward the pins 27 are carriedacross the engaging face of the trip ,cams 26 until they pass beyond thelimits of such face. The parts are so constructed that thisdisengagement of the pins 27 from the trip cams 26 will occur at a timewhen the end of the bolt has been located opposite the strike plate. Thebolt being freed is forced forward under the inuence of the spring 18against the strike plate, and whenv thedoor has moved to position withthe bolt opposite its keeper, it flies into the socket and securelyholds the door against opening movement, the cani plates 6 being held ina retracted position by engagement with the strike plate. As the door isopened and the cam levers are forced outward under the influence of thesprings 8'? the trip yields to allow passage of the pins 27, -as shownin Fig. 5 of the drawings.

In ordento provide for the operation of the bolt by means of the knob 30located outside of the door the following mechanism is employed. Theroll-back 15 ,has a sleeve 31y extending within the knob 17, and

within this sleeve is located a spring 32 pressing against a pin 33 in apush spindle 34. This spring firmly@ holds the push spindle at theoutward limit oi its play or in the'position shown in Fig. ,3 of thedrawings. The knob' is secrire'd to the sleeve 31 as by a screw 35. Theend of the spindle 36 oi the knob 30 and oi the push spindle 34 areformed to interlock, in the construction shoyvn a tongue 37 on the onepart entering a groove 38 in the other part. As the push spindle 34 ismoved inward the tongue and groove engage so that the roll-back may .beoperated by means of the knob 30. r

A rosette 39 is secured to the inner face of the'door and this rosetteprojects within the shank of the knob 17, as shown in Fig. 3. 4Thisrosette has two annular grooves 40 joined by aconnecting groove 41.Apawl 42 is secured to the push spindle 34, its end lying within one ofthe grooves 40, as shown in Fig. 3 ofthe drawings.

When it is desired to set the mechanism so that the bolt may be operatedby the knob outside of the door the push spindle 34 is moved inward fromthe position shown in Fig. 3 until the pawl 42 engages the other groovefrom that in which it is shown as located in said Fig. 3. This locks thepush spindle 34 with the spindie 36, and upon rotating the knob 30 theroll-back 15 will be rotated to operate the bolt. In this turningmovement, however, of the knob 30 the pawl 42 will be moved around inthe groove in which it is located when the two spindles are engagedu'ntil it arrives opposito the connecting groove 41. The Spring 32 willbe comparatively weak, so that continued pressure upon^theknob 30 willhold the two spindles in engagement. When pressure upon the knob 30,however, is released the pawl 42 as it arrives opposite the groove 41will move along said groove under the influence ofthe spring 32 and thetwo spindles will be thus disengaged.

While, as hereinbeiore stated, the mechanism may be entirely inclosedwithin a casing, yet a convenient form of constructing the device is asshown herein. In this yinstancethe door a is cut away entirely throughfrom one face to the other and face plates b.-c are employed to coverthe openings thus made. The face plate c will preferably extend beyondthe flange 3 a sufficient distance to prevent any chance of cutting awaythe wood oi thedo'or for access to the lock. AThe rosette 39 may beformed integral with the plate b, as shown in Fig. 3 oi the drawings.

What I claim as my invention and desire to secure by Letters Patent is:-r

1. A case, a bolt movably mounted within the case, means for retrac'tlngthe bolt, a bolt operating cam, and connections between said bolt andcam arranged to disconnect the parts in the backward movement of thebolt.

2. A case, a bolt movably mounted within the case, means for reti-actingthe bolt, a bolt operating cam, al trip located on the bolt, andconnections between said cam and trip arranged t6 be disconnectedy inthe backward movement of the bolt. l

3. A case, a bolt movable within the case, a trip mounted on the bolt, abolt operating cam,` and connections between said trip and cam arrangedto disconnect the parts in the backward movement of the bolt but toallow movement of the cam independently of the bolt.

4. A case, a bolt movably mounted within the case,

'means for retracting the bolt, a cam lever projecting to engage astrike plate, and connections between said lever anzi bolt to move thelatter, said connections being broken at times.

5. A case, a bolt movably mounted ln the cus'e, means actuated by themovement of a art bearing the case for actuating the bolt. andconnections between the bolt and operating means arranged for operativeconnection and disconnection. i

(i. A case, a bolt movnbly mounted within the case, means for retraciingthe bolt, a cam lever niovably mounted within the case, a tripY mountedon the bolt in the path of movement of the cam lever, and means fordisengaging the trip from saldcam lever.

7. A casing, a ,bolt movable within the casing, means for retracting thebolt, a cam lever movably mounted'wltlv,

in the casing and having a pin projecting from the side thereof; a tripmovably mounted on, the bolt, and a cam located on said trip to act uponsaid pin in one movement of the lever, but to move and allow the pin topass in the opposite movement of the lever.

8. A casing, a bolt movably mounted within the casing,

a cam lever movably mounted within the casing, means for retracting thebolt, a trip pivoted to the bolt at oppo site sidesand with a partoverlying the bolt, a .spring interposed between the bolt and said trip,a cam located on the side of the strip in the patlrof movement of thelever, said cam having a cam face by means of which the trip is operatedto allow movement of the lever independently of the bolt.

9. A sectional knob spindle, means for actuating said spindle, onesection of said spindlev being movable to engage the opposite section, apawl to hold the spindle sections in engagement, and self-actuatingmeans for releasing said p'awl.,

10. A sectional knob spindle, knobs secured to said spindle, one bf thespindle sections projecting through the knob and movable with' respectthereto, intel-engaging means on the two spindle sections, a pawl forholding the )spindle sections in engagement, and self-actuating meansfor disengaging said pawl.

11. A case, a boit movably mounted in the case, xneans for retractingthe bolt, and a bolt operating cam connected with the bolt to retract itbut arranged to be operatively disengaged therefrom.

129A sectional knob spindle,l knobs secured to said spindle, one of theknobs having n recess in the outer face thereof, one of saidV spindlesections projecting through the knob with the recess, a pawl to holdtheknob spindles in engagement, interengaging means on the meeting ends ofthe spindles, and self-actuating means to disengage said ment, andself-actuating means for disergaging the pawl.-

14. A sectional knob spindle, interengagiin.r nic-aus on the ends of thespindle, means for operating the spindles, a pawl to hold the spindlesin engagement, and sell? actuating means for releasing the pawl.

15.` `A sectional knob spindle, interengaging means on the adjacent endsof the spindles, means for operating the spindles, a pawl mounted torotate with said spindles, a member having grooves .to receive said pawlto hold the movable spindle sections against lengthwise movement, and agroove uniting said holding grooves.

16. A sectional knob spindle, interengaging means ou the adjacent endsof the spindles, a knob secured to one end of the spindle, the movablesection of the spindle projecting through said knob, a pawl mounted torotate with the spindle, a part having holding grooves for the receptionof said pawl, and a releasing groove connecting the holdingl grooves,and a spring to retract tbc movable spindle.

17. In a latch mechanism, a sleeve, a roll-back secured to said sleeve,a Sectional spindle having its movable seicton mounted within saidsleeve and projecting through a kno'b, the knob secured to the sleeve, apawl secured to the spindle and projecting through said sleeve, and apart having,r locking grooves for the reception of the pawl, and areleasing groove uniting the locking grooves.

1S. A case, a boli mounted within the casing, means for roti-acting thebolt, n bolt actuating cam, and o. trip corincction between saliti boltand cam. A

1Q. A case, o. boil; movably mounted within the casez means for movingthe bolt in one direction, and connections lJetween the moving means andbolt normally ellowing movement of the latter in the opposite directionindependently of its moving means.

120. A case, a bolt Inovnbly mounted within the case, manually operatedintens for moving the bolt, means for mechanically actuating.; the bolt,and connections between the mechanically actuating meansnnd bolt toallow movenient of the lutter independently of.t`ne former.

21. A case, a bolt movable within the case, a trip mounted to move thebolt in one direction but to allow independent movement thereof in theopposite directiony a bolt operating cam, and connections between saidtrip and cam arranged for mechanicalengagement and disengage- 20 ment inthe backward movement of the bolt.

22. A casefa bolt movably mounted within the case, self-actuating meansfor movi-ng the bolt in one direction, and connections between saidmoving means and the bolt normally allowing movement of the latter inthe opposite 25

